36 citations · 68 across the 11 of their papers we have counts for
13 papers
From the QBO to Rieger-type periods: Explaining extreme solar events by tidally triggered magneto-Rossby waves
F. Stefani, G. M. Horstmann, G. Mamatsashvili +1
It has recently been demonstrated that the occurrence of extreme solar events is governed by a phase-stable period close to 1.723 years (629.29 days). According to our previously d…
An optimized tidal-trigger model of the QBO, and some implications for the Carrington event
F. Stefani, G. M. Horstmann, G. Mamatsashvili +1
Magneto-Rossby waves in the solar tachocline are currently being discussed as a potential cause of the quasi-biennial oscillation (QBO). By analyzing sequences of ground-level enha…
Tidal triggers and the predictability of solar activity
F. Stefani, G. M. Horstmann, G. Mamatsashvili +1
Magneto-Rossby waves in the solar tachocline are currently considered to be one of the main determinants of solar activity. In particular, they can give rise to the quasi-biennial…
Reappraising the Elatina series: What if the Solar Interpretation Were Correct?
F. Stefani, M. Gugliotta, G. M. Horstmann +2
We revisit the sedimentary laminae from the Neoproterozoic Elatina Formation of South Australia. These were first interpreted as varves driven by solar activity and later as tidali…
Adding further pieces to the synchronization puzzle: QBO, bimodality, and phase jumps
F. Stefani, G. M. Horstmann, G. Mamatsashvili +1
This work builds on a recently developed self-consistent synchronization model of the solar dynamo which attempts to explain Rieger-type periods, the Schwabe/Hale cycle and the Sue…
Generation of interfacial waves by rotating magnetic fields
Gerrit Maik Horstmann, Yakov Nezihovski, Thomas Gundrum +1
Interfacial waves arising in a two-phase swirling flow driven by a low-frequency rotating magnetic field (RMF) are studied. At low RMF frequencies, of the order of 1-10 Hz, the osc…
Rieger, Schwabe, Suess-de Vries: The Sunny Beats of Resonance
F. Stefani, G. M. Horstmann, M. Klevs +2
We propose a self-consistent explanation of Rieger-type periodicities, the Schwabe cycle, and the Suess-de Vries cycle of the solar dynamo in terms of resonances of various wave ph…
Tidally Forced Planetary Waves in the Tachocline of Solar-like Stars
G. M. Horstmann, G. Mamatsashvili, A. Giesecke +2
Can atmospheric waves in planet-hosting solar-like stars substantially resonate to tidal forcing? Substantially at a level of impacting the space weather or even of being dynamo-re…
Cell voltage model for Li-Bi liquid metal batteries
Norbert Weber, Carolina Duczek, Gerrit M. Horstmann +5
Lithium-bismuth bimetallic cells are amongst the best explored liquid metal batteries. A simple and fast quasi-one-dimensional cell voltage model for such devices is presented. The…
Anode-metal drop formation and detachment mechanisms in liquid metal batteries
Sabrina Bénard, Norbert Weber, Gerrit Maik Horstmann +2
We study numerically localised short circuits in Li||Bi liquid metal batteries. In the prototype of a classical, three liquid-layer system, we assume a perceptible local deformatio…
Conductivity influence on interfacial waves in liquid metal batteries and related two-layer systems
Tom Weier, Ilmars Grants, Gerrit Maik Horstmann +5
Fluid flows in liquid metal batteries can be generated by a number of effects. We start with a short overview of different driving mechanisms and then address questions specific to…
Measurement of interfacial wave dynamics in orbitally shaken cylindrical containers using ultrasound pulse-echo techniques
Gerrit Maik Horstmann, Markus Wylega, Tom Weier
We present a novel experiment on interfacial wave dynamics in orbitally shaken cylindrical vessels containing two- and three fluid layers. The experiment was designed as a hydrodyn…
Coupling and stability of interfacial waves in liquid metal batteries
Gerrit Maik Horstmann, Norbert Weber, Tom Weier
We investigate the interfacial wave coupling dynamics in liquid metal batteries and their effects to the battery's operation safety. Similar to aluminum reduction cells, liquid met…